[!TIP|label: Multiple Accounts]

TYPE ACCOUNTS EMAIL SSH KEY GITHUB REPOS RANGE
work John Doe john@work.com ~/.ssh/work_ed25519 git@github.com:work/*
service account jenkins jenkins@work.com ~/.ssh/jenkins_ed25519 git@github.com:company/*
personal John Doe john@personal.com ~/.ssh/personal_ed25519 git@github.com:john/*
  • ~/.gitconfig.d/accounts/<account> is used to distinguish accounts and emails
  • ~/.gitconfig.d/.gitconfig is used to distinguish the git remote URLs by includeIf hasconfig:remote.*.url
  • ~/.ssh/config.d/github is used to distinguish the ssh key by host-alias

[!NOTE]

  • to check git the git clone debug log via:
    GIT_TRACE=true GIT_CURL_VERBOSE=true GIT_TRACE_PACK_ACCESS=true GIT_TRACE_SETUP=true GIT_TRACE_SHALLOW=true \
git clone <repo-url>
  • check more details in * iMarslo - troubleshooting

with ssh

gitconfig

work jenkins personal 
# ~/.gitconfig.d/accounts/work
[user]
    name  = John Doe
    email = john@work.com

work

# ~/.gitconfig.d/accounts/work
[user]
    name  = John Doe
    email = john@work.com

jenkins

# ~/.gitconfig.d/accounts/jenkins
[user]
    name  = jenkins
    email = jenkins@work.com

personal

# ~/.gitconfig.d/accounts/personal
[user]
    name  = John Doe
    email = john@personal.com

~/.gitconfig.d/.gitconfig 
## -- work -- ##
[url "git@github-work.com:work/"]
  insteadOf         = git@github.com:work/
[includeIf "hasconfig:remote.*.url:*github.com?work/**"]
  path              = ~/.gitconfig.d/accounts/work

## -- service account -- ##
[url "git@github-jenkins.com:company/"]
  insteadOf         = git@github.com:company/
[includeIf "hasconfig:remote.*.url:*github.com?company/**"]
  path              = ~/.gitconfig.d/accounts/jenkins

## -- work -- ##
[url "git@github-personal.com:john/"]
  insteadOf         = git@github.com:john/
[includeIf "hasconfig:remote.*.url:*github.com?john/**"]
  path              = ~/.gitconfig.d/accounts/personal

~/.gitconfig.d/.gitconfig

## -- work -- ##
[url "git@github-work.com:work/"]
  insteadOf         = git@github.com:work/
[includeIf "hasconfig:remote.*.url:*github.com?work/**"]
  path              = ~/.gitconfig.d/accounts/work

## -- service account -- ##
[url "git@github-jenkins.com:company/"]
  insteadOf         = git@github.com:company/
[includeIf "hasconfig:remote.*.url:*github.com?company/**"]
  path              = ~/.gitconfig.d/accounts/jenkins

## -- work -- ##
[url "git@github-personal.com:john/"]
  insteadOf         = git@github.com:john/
[includeIf "hasconfig:remote.*.url:*github.com?john/**"]
  path              = ~/.gitconfig.d/accounts/personal

~/.gitconfig 
# OPTION - force using ssh for github
[url "git@github.com:"]
  insteadOf         = https://github.com/

[include]
  path              = ~/.gitconfig.d/.gitconfig

~/.gitconfig

# OPTION - force using ssh for github
[url "git@github.com:"]
  insteadOf         = https://github.com/

[include]
  path              = ~/.gitconfig.d/.gitconfig

ssh config

  • ~/.ssh/config.d/github

    [!TIP] the HOST name alias should matches to the URL in gitconfig

    ~/.ssh/config.d/github 
      HOST github-work.com
       HostName       github.com
       User           git
       IdentityFile   ~/.ssh/work_ed25519
       IdentitiesOnly yes

  HOST github-jenkins.com
       HostName       github.com
       User           git
       IdentityFile   ~/.ssh/jenkins_ed25519
       IdentitiesOnly yes

  HOST github-personal.com
       HostName       github.com
       User           git
       IdentityFile   ~/.ssh/personal_ed25519
       IdentitiesOnly yes

    ~/.ssh/config.d/github

      HOST github-work.com
       HostName       github.com
       User           git
       IdentityFile   ~/.ssh/work_ed25519
       IdentitiesOnly yes

  HOST github-jenkins.com
       HostName       github.com
       User           git
       IdentityFile   ~/.ssh/jenkins_ed25519
       IdentitiesOnly yes

  HOST github-personal.com
       HostName       github.com
       User           git
       IdentityFile   ~/.ssh/personal_ed25519
       IdentitiesOnly yes

  • ~/.ssh/config

    [!TIP]

    • put the include in the beginning of the ~/.ssh/config file

    ~/.ssh/config 
      Include config.d/github

  # the rest of your ssh config #

    ~/.ssh/config

      Include config.d/github

  # the rest of your ssh config #

with https

[!NOTE]

TOKEN TYPE GIT OPERATIONS
(clone/push)		 GIT LFS UPLOAD/DOWNLOAD GITHUB ACTIONS (WORKFLOW) semantic-release GITHUB API (REST/GRAPHQL) PRIVATE SUBMODULES GITHUB CLI (GH) NOTES
Fine-grained PAT ✓ ✗
Fails (LFS lock verification denied)		 ✓ ✓ ✓ ✗ ⚠️
Partially supported		 Secure and scoped, but limited in CLI/automation contexts like Git LFS
Classic PAT ✓ ✓ ✓ ✓ ✓ ✓ ✓ Recommended for CLI tools, LFS, CI/CD, automation, and broad API access

gitconfig

~/.gitconfig.d/.gitconfig 
[credential "https://github.com/work"]
  username          = john@work.com
[credential "https://github.com/company"]
  username          = jenkins@work.com
[credential "https://github.com/john"]
  username          = john@personal.com

~/.gitconfig.d/.gitconfig

[credential "https://github.com/work"]
  username          = john@work.com
[credential "https://github.com/company"]
  username          = jenkins@work.com
[credential "https://github.com/john"]
  username          = john@personal.com

~/.gitconfig 
# OPTION - force using https for github
[url "https://github.com/"]
  insteadOf         = git@github.com:

[include]
  path              = ~/.gitconfig.d/.gitconfig

[credential]
  helper            = store --file ~/.gitconfig.d/.git-credentials

~/.gitconfig

# OPTION - force using https for github
[url "https://github.com/"]
  insteadOf         = git@github.com:

[include]
  path              = ~/.gitconfig.d/.gitconfig

[credential]
  helper            = store --file ~/.gitconfig.d/.git-credentials

setup .git-credentials

$ echo -e "protocol=https\nhost=github.com\nusername=john@work.com\npassword=${PAT_WORK}\n" |
      git credential-store --file ~/.gitconfig.d/.git-credentials store
$ echo -e "protocol=https\nhost=github.com\nusername=jenkins@work.com\npassword=${PAT_JENKINS}\n" |
      git credential-store --file ~/.gitconfig.d/.git-credentials store
$ echo -e "protocol=https\nhost=github.com\nusername=john@personal.com\npassword=${PAT_PERSONAL}\n" |
      git credential-store --file ~/.gitconfig.d/.git-credentials store

# to verify/check the credentials

# to check in macOS Keychain
$ printf "protocol=https\nhost=github.com\nusername=john@work.com\n" | git credential-osxkeychain get

# to check in git-credentials file
$ printf "protocol=https\nhost=github.com\nusername=john@work.com\n" | git credential-store --file ~/.gitconfig.d/.git-credentials get

git hook and alias

[!NOTE]

  • setup the ~/.git-template directory as the template directory for git
$ mkdir -p ~/.git-templates/hooks
$ git config --global init.templatedir '~/.git-templates'

$ touch ~/.git-templates/hooks/post-checkout ~/.git-templates/set-git-user.sh
$ chmod +x ~/.git-templates/hooks/post-checkout ~/.git-templates/set-git-user.sh

[!TIP] ~/.git-templates/set-git-user.sh will be using for both post-checkout hook and git alias

#!/usr/bin/env bash
#=============================================================================
#     FileName : ~/.git-template/set-git-user.sh
#       Author : marslo.jiao@gmail.com
#      Created : 2025-06-30 21:54:24
#   LastChange : 2025-07-01 00:16:22
#=============================================================================

set -euo pipefail

git rev-parse --is-inside-work-tree >/dev/null 2>&1 || {
  echo "fatal: not a git repository (or any of the parent directories): .git" >&2
  exit 128
}

# shellcheck disable=SC2155
declare -r REMOTE_URL=$( git remote get-url origin 2>/dev/null || git config --get remote.origin.url 2>/dev/null )
[[ -z "${REMOTE_URL}" ]] && { echo "fatal: no remote repository configured for 'origin'" >&2; exit 0; }

declare username=''
declare email=''

case "${REMOTE_URL}" in
  *github.com?work/*    | *git@github-work.com:*     )
    username='John Doe'; email='john@work.com'     ;;
  *github.com?company/* | *git@github-jenkins.com:*  )
    username='jenkins' ; email='jenkins@work.com'  ;;
  *github.com?john/*    | *git@github-personal.com:* )
    username='John Doe'; email='john@personal.com' ;;
esac

# shellcheck disable=SC2015
[[ -n "${username}" && -n "${email}" ]] && {
  git config user.name  "${username}"
  git config user.email "${email}"
  printf "\033[0;2;3;37m>> git user set to: \033[0;3;33m%s \033[0;2;3;37m<\033[0;3;36m%s\033[0;2;3;37m>\033[0m\n" "${username}" "${email}"
} || {
  printf "\033[0;2;3;37m>> git user not set, using default \033[0;3;33m%s \033[0;2;3;37m<\033[0;3;36m%s\033[0;2;3;37m>\033[0m\n" "$(git config user.name)" "$(git config user.email)"
}

# vim:tabstop=2:softtabstop=2:shiftwidth=2:expandtab:filetype=sh:

git hook

[!TIP]

  • the post-checkout hook will be triggered after a git checkout command. it will set the git user name and email based on the remote URL automatically
  • verify by:
    # clone a repo
$ git clone git@github.com:work/repo.git

# verify
$ git config --local user.name
$ git config --local user.email

#!/usr/bin/env bash
# ~/.git-templates/hooks/post-checkout

if [[ "$1" = "0000000000000000000000000000000000000000" || "$3" = '1' ]]; then
  ~/.git-templates/set-git-user.sh
fi

# vim:tabstop=2:softtabstop=2:shiftwidth=2:expandtab:filetype=sh:

git alias

$ git config --global alias.set-user '!~/.git-templates/set-git-user.sh'

# verify
$ cd /path/to/your/repo
$ git set-user
Copyright © marslo 2020-2024 all right reserved，powered by GitbookLast Modified: 2025-07-02 23:10:19

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